Microcapacitor (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Microcapacitors made with engineered hafnium oxide/zirconium oxide films in 3D trench capacitor structures -- the same structures used in modern microelectronics -- achieve record-high energy storage and power density, paving the way for on-chip energy storage. Credit Nirmaan Shanker/Suraj Cheema Usage Restrictions N/A License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.